Hi @Lemonade, your post got me researching and I found this interesting blog post -https://elynjacobs.com/2012/01/15/natural-alternatives-to-tamoxifen/
and also came across the concept of an "integrative oncologist" which I found interesting as well.
I am in a different stage of life (post-menopausal) and after recent surgery (aux dissection) was declared cancer-free as long as I take an oestrogen suppressant. 4 years ago I had lumpectomy and aux clearance and took Arimadex, now wanting to find natural alternatives. As has been said many times, we are all on our own journeys, treatment teams are required to offer standard practice treatment advice, and thanks to some women on this site, I am slowly becoming more proactive about my own health. Wishing you all the best xo